Posted 5/2/2013 13:05 (#3075785 - in reply to #3075461) Subject: RE: JD 4440 hydraulic line at sump screen plug
Near Intersection of I-35 & I-90 Southern Mn.
I have not heard of plumbing into that location. When we had a 4440 I ordered a special filter housing that had a port on it. I believe it was in two pieces but anyway had a port where a hyd hose could be installed to provide a no resistance path back to the tractor for an orbit motor.
Possibly the plumbing on yours is trying to accomplish this.